User's Guide ______________________________________________________________________  
132 _________________________________________________________________ M210667EN-C 
Startup Procedure 
LT Maintenance Interface 
Connection to Maintenance Terminal 
Any computer equipped with terminal emulation software or a VT100-
compatible terminal with an RS-232 serial interface can be used as a 
maintenance terminal for LT31. The maintenance cable QMZ101 
(included in the delivery) provides a 9-pin D connector for the computer 
and a connector for LT31. The external maintenance connector of LT31 
is located at the right side of the receiver interface unit (see Figure 89 
below). The connector is protected with a cap. Replace the protective cap 
after disconnecting the maintenance cable. LT maintenance interface is 
shown in Figure 90 on page 133. 
 
 0401-124 
Figure 89  External Maintenance Line Connector